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US 4,541,639 AGranted
Ram-type blowout preventer with improved ram front packer
AssigneeCameron Iron Works, Inc.
InventorBolie C. Williams, III
Life of this patent
Estimating the term…
Abstract
A ram-type blowout preventer having a body with a central bore extending therethrough and with guideways extending outward from the central bore, a ram in each of the guideways and having a recess on its front face, a front packer positioned in said ram recess and including a backing portion and an insert portion, the insert portion being tightly inter-engaged with said backing portion.
Claims8
A ram-type blowout preventer comprising
- a body having a central bore therethrough and aligned guideways extending outward from the central bore,
- a ram in each of said guideways and having a front recess,
- a front packer positioned in said ram front recess,
- said front packer including an elastomeric backing portion having a recess in its front face and an elastomeric insert portion removably positioned in said recess of said backing portion,
- said recess in said backing portion including re-entrant recesses at each side of the rear of the recess, and
- said insert portion having lips which fit tightly into said re-entrant portions of said recess.
3 more elements
A front packing for a ram-type blowout preventer comprising
- a backing portion of elastomeric material with an upper plate and a lower plate, and
- an insert portion of elastomeric material with an upper plate and a lower plate,
- said backing portion having a recess in its front face with re-entrant recesses at each side thereof,
- said insert portion having a shape to tightly interengage in said backing portion recess and including lips adapted to tightly fit into said re-entrant recesses.
1 more element
A ram-type blowout preventer comprising
- a body having a central bore therethrough and aligned guideways extending outward from the central bore,
- a ram in each of said guideways and having a front recess,
- a front packer positioned in said ram front recess,
- said front packer including an elastomeric backing portion having a recess in its front face and side recesses and an elastomeric insert portion removably positioned in said recess of said backing portion,
- said insert portion extending across the face of said backing portion and having side portions fitting closely into said backing portion side recesses.
2 more elements
Dependencies are inferred from the claim text.